I'd like to have a web site that users can enter information, and then have that information go to my windows server and run a deskop application that outputs a file, and then email (or link to it via the web) that file to the user.

For example, I see some websites that a user requests a screenshot from a windows computer; or converts a file to PDF, or etc., and it then gives it back to the user. Just assume it's doing it all the work on the windows computer.

Any insights, or links to other sites, would be much appreciated. I'm not sure what to search on, or what technology to do this. Any help is appreciated!!!